crystal detector

简明释义

晶体检波器

英英释义

例句

1.You can find crystal detectors in vintage radio equipment.

你可以在复古收音设备中找到晶体探测器。

2.In early wireless communication, the crystal detector was essential for signal reception.

在早期无线通信中，晶体探测器对信号接收至关重要。

3.The radio used a simple crystal detector to pick up AM signals.

这台收音机使用了一个简单的晶体探测器来接收AM信号。

4.The crystal detector works by rectifying the radio waves into audio signals.

晶体探测器通过将无线电波整流为音频信号来工作。

5.Many hobbyists enjoy building their own radios using a crystal detector.

许多爱好者喜欢使用晶体探测器自制收音机。

作文

The invention of the radio revolutionized communication, and at the heart of early radio technology was a simple yet effective device known as the crystal detector. A crystal detector is a type of semiconductor device used to detect radio signals. It was one of the first solid-state detectors and played a crucial role in the development of wireless communication. The basic principle behind a crystal detector is the use of a crystal, typically made of galena or other similar materials, which rectifies the alternating current (AC) signals received by an antenna into direct current (DC) signals that can be heard through a speaker or headphones.In the early 20th century, inventors and hobbyists began experimenting with various materials to improve the performance of the crystal detector. They discovered that certain crystals had better conductive properties, allowing for clearer reception of radio waves. This innovation led to the widespread use of crystal detectors in crystal radios, which were popular among amateur radio enthusiasts. These simple radios required no external power source and could operate solely on the energy of the radio waves they received.The design of a typical crystal detector involves a fine wire, often referred to as a 'cat's whisker', which lightly touches the surface of the crystal. This contact creates a point where the electrical properties change, allowing the detector to function effectively. The simplicity of the crystal detector made it accessible for many people to build their own radios, fostering a sense of community among early radio hobbyists.Despite the advancements in technology, the crystal detector remains an important part of radio history. Its significance lies not only in its functionality but also in how it inspired future generations of engineers and inventors. The concept of using a solid-state device to detect signals paved the way for more complex technologies, including transistors and integrated circuits.In modern times, while crystal detectors have largely been replaced by more sophisticated devices, they still hold educational value. Many electronics enthusiasts and students learn about the principles of radio communication through the construction and operation of crystal radios. This hands-on experience helps them understand the fundamentals of electronics and signal detection, serving as a foundation for more advanced studies in the field.In conclusion, the crystal detector is not just a relic of the past; it represents a significant milestone in the history of communication technology. Its simplicity and effectiveness have made it a lasting symbol of innovation. As we continue to explore new frontiers in technology, it is essential to remember the humble beginnings of devices like the crystal detector, which laid the groundwork for the sophisticated systems we rely on today. Understanding the role of the crystal detector in the evolution of radio technology allows us to appreciate the ingenuity and creativity of those who came before us, inspiring us to push the boundaries of what is possible in the future.

无线电的发明彻底改变了通信，而在早期无线电技术的核心是一个简单而有效的设备，被称为晶体探测器。晶体探测器是一种用于检测无线电信号的半导体设备。它是最早的固态探测器之一，在无线通信的发展中发挥了至关重要的作用。晶体探测器的基本原理是使用一种晶体，通常由方铅矿或其他类似材料制成，将天线接收到的交流电（AC）信号整流为可以通过扬声器或耳机听到的直流电（DC）信号。在20世纪初，发明家和爱好者开始尝试各种材料，以改善晶体探测器的性能。他们发现某些晶体具有更好的导电特性，从而可以更清晰地接收无线电波。这一创新导致晶体探测器在水晶收音机中的广泛应用，这些收音机在业余无线电爱好者中非常受欢迎。这些简单的收音机无需外部电源，仅依靠它们接收到的无线电波的能量运行。典型的晶体探测器设计包括一根细线，通常被称为“猫须”，轻轻接触晶体的表面。这种接触创建了一个电特性变化的点，使探测器能够有效工作。晶体探测器的简单性使许多人能够自己组装收音机，培养了早期无线电爱好者之间的社区感。尽管技术不断进步，晶体探测器仍然是无线电历史的重要组成部分。它的意义不仅在于其功能性，还在于它如何激励未来几代工程师和发明家。使用固态设备检测信号的概念为更复杂的技术铺平了道路，包括晶体管和集成电路。在现代，虽然晶体探测器已经在很大程度上被更复杂的设备取代，但它们仍然具有教育价值。许多电子爱好者和学生通过构建和操作水晶收音机来学习无线通信的原理。这种动手经验帮助他们理解电子学和信号检测的基础，为更高级的研究奠定了基础。总之，晶体探测器不仅仅是过去的遗物；它代表了通信技术历史上的一个重要里程碑。它的简单性和有效性使其成为创新的持久象征。当我们继续探索技术的新前沿时，记住像晶体探测器这样的设备的谦卑起源至关重要，它们为我们今天依赖的复杂系统奠定了基础。理解晶体探测器在无线电技术演变中的作用，使我们能够欣赏前人们的智慧和创造力，激励我们在未来推动可能性的边界。